This image of supernova GRB 250314A, captured by the James Webb Space Telescope’s Near Infrared Camera (NIRCam), shows compass arrows, scale bar, and color key for reference.
The north and east compass arrows show the orientation of the image on the sky. Note that the relationship between north and east on the sky (as seen from below) is flipped relative to direction arrows on a map of the ground (as seen from above).
The scale bar is labeled in arcseconds, a measure of angular distance on the sky. One arcsecond is equal an angular measurement of 1/3600 of one degree. There are 60 arcminutes in a degree and 60 arcseconds in an arcminute. (The full Moon has an angular diameter of about 30 arcminutes.) The actual size of an object that covers one arcsecond on the sky depends on its distance from the telescope.
This image shows invisible near-infrared wavelengths of light that have been translated into visible-light colors. The color key shows which NIRCam filters were used when collecting the light. The color of each filter name is the visible light color used to represent the infrared light that passes through that filter.
Read a full description of the image.
About the ObjectR.A. Position
R.A. PositionRight ascension – analogous to longitude – is one component of an object’s position.
13:25:12.16
Dec. Position
Dec. PositionDeclination – analogous to latitude – is one component of an object’s position.
-05:16:55.10
Constellation
ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
Virgo
Dimensions
DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
Image is about 2.3 arcminutes across
About the DataData Description
Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
Science Team: The astronomers who planned the observations and analyzed the data. “PI” refers to the Principal Investigator.
This image was created with Webb data from proposal: 9296 (A. Levan)
Instrument
InstrumentThe science instrument used to produce the data.
NIRCam
Exposure Dates
Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
02 July 2025
Filters
FiltersThe camera filters that were used in the science observations.
F150W, F200W, F277W, F356W, F444W